/**
 * Copyright (c) 2025 Huawei Technologies Co., Ltd.
 * This program is free software, you can redistribute it and/or modify it under the terms and conditions of
 * CANN Open Software License Agreement Version 2.0 (the "License").
 * Please refer to the License for details. You may not use this file except in compliance with the License.
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
 * See LICENSE in the root of the software repository for the full text of the License.
 */


#ifndef __DFT_C2R_CORE__
#define __DFT_C2R_CORE__

#include "ops.h"
#include "fftcore/fft_core_h_base.h"
#include "utils/aspb_status.h"

using namespace AsdSip;

class DftC2RCore : public FftCoreHBase {
public:
    DftC2RCore(unsigned N_doing,
        unsigned batch, AsdSip::asdFftType fft_type, bool forward)
        : FftCoreHBase(FFTCoreType::kDftC2R, N_doing, batch, fft_type, forward) {}
    ~DftC2RCore() override { DestroyInDevice();}
    size_t EstimateWorkspaceSize() override;
    void Run(Tensor& input, Tensor& output, void *stream, workspace::Workspace& workspace) override;
private:
    void InitRadix() override;
    bool PreAllocateInDevice() override;
    void DestroyInDevice() const;
    AspbStatus InitRotationMatrix();
    AspbStatus InitTactic();
 
    std::string opName{"DftC2ROperation"};
    std::shared_ptr<AsdSip::FFTensor> rotationMatrix;
};

#endif